Depending on the processed material from each drill must be properly sharpened. To verify the correct angle will help a specially prepared square plate of copper or aluminium with a thickness of 1 mm.
To become operational protractor enough to cut it cut, as shown in the picture: a large cutout at an angle of 120 degrees, the other half is 60 degrees and the surviving corner of a square is 90.
Recommend to read
STOVE “HOUSEKEEPER”
Wonder how good Russian baking! The sweet bread from it, most nourishing soup of it. She and the heat in the house will remain, and herbs for the winter, dried, and pottery, saverchenko...
WALK ON THE WATER
I live in Siberia, from an early age-hunting, fishing. Our wonderful Siberian. A lot of rivers and lakes. Rich in fish and game. Most of all I love to hunt waterfowl. But to take it is...
